Design
Screen size
The bigger the screen size is, the better the user experience.
- Boult Audio Crown R 1.43
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- Maxima Max Pro X4 1.3"
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Display type
The type of technology used in the display.
- Boult Audio Crown R oled_amoled
- Maxima Max Pro X4 lcd
Ingress Protection (IP) rating
The first number of the IP rating refers to protection against dust, while the second number refers to protection against liquid. E.g. a first number of 6 denotes that it is completely dustproof, and a second number of 7 denotes that the device can withstand full immersion in water.
- Boult Audio Crown R ip67
- Maxima Max Pro X4 ip68
Pixel density
Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
- Boult Audio Crown R 461
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- Maxima Max Pro X4 null
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Resolution
Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
- Boult Audio Crown R 466 x 466
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- Maxima Max Pro X4 x px
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Always-On Display
The user can see information such as date, time, and notifications even when the screen is off. The functionality can be enabled or disabled.
- Boult Audio Crown R
- Maxima Max Pro X4
Thickness
The thickness (or depth) of the product.
- Boult Audio Crown R null
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- Maxima Max Pro X4 11mm
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Waterproof depth rating
The waterproof depth rating indicates how well the device is protected against water ingress and water pressure. Devices which can withstand more water pressure are better for swimming or diving.
- Boult Audio Crown R null
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- Maxima Max Pro X4 1.5m
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Weight
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
- Boult Audio Crown R null
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- Maxima Max Pro X4 42g
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Height
The height represents the vertical dimension of the product.
- Boult Audio Crown R null
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- Maxima Max Pro X4 51.5mm
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Width
The width represents the horizontal dimension of the product.
- Boult Audio Crown R null
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- Maxima Max Pro X4 46.5mm
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Volume
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
- Boult Audio Crown R 0
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- Maxima Max Pro X4 26.34225cm³
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Width of band
The band or strap of the device takes up less space.
- Boult Audio Crown R null
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- Maxima Max Pro X4 22mm
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Sensors
Has an accelerometer
An accelerometer is a sensor used to measure the linear acceleration of a device. A common application is detecting when a device changes between vertical and horizontal positions.
- Boult Audio Crown R
- Maxima Max Pro X4
Activity tracking
Tracks distance
It tracks how far you travel.
- Boult Audio Crown R
- Maxima Max Pro X4
Measures pace
Measuring pace shows how much time it takes to travel one kilometer or one mile. For example, in running, a 4 minute kilometer would be a very good pace.
- Boult Audio Crown R
- Maxima Max Pro X4
Has a route tracker
With a route tracker you can add your route onto a map. It is helpful if you plan to do the same route again, or want to share it with your community.
- Boult Audio Crown R
- Maxima Max Pro X4
Tracks elevation
It can detect changes in elevation, such as when you are climbing stairs.
- Boult Audio Crown R
- Maxima Max Pro X4
Connectivity
Bluetooth version
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
- Boult Audio Crown R 5.1
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- Maxima Max Pro X4 5
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Supports Galileo
Galileo is a global navigation satellite system (GNSS) that is similar to GPS. Supported devices can use a combination of Galileo and GPS for location-based services such as Google Maps, and tend to be around 30% more accurate than GPS-only devices.
- Boult Audio Crown R
- Maxima Max Pro X4
Battery
Battery life
With a longer battery life, you don’t have to worry about charging the device as often.
- Boult Audio Crown R 5
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- Maxima Max Pro X4 15 days
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Charge time
The time it takes to fully charge the battery.
- Boult Audio Crown R 2.3
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- Maxima Max Pro X4 2h
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Has wireless charging
It supports a wireless charging standard such as Qi. To charge the device, you simply put it down on a compatible charging pad.
- Boult Audio Crown R
- Maxima Max Pro X4
Features
Has HRV tracking
Heart rate variability (HRV) tracking measures fluctuations in the time between heart beats. These fluctuations can be an indication of health conditions (such as heart conditions or mental health issues). Note: This feature may not be available in all markets.
- Boult Audio Crown R
- Maxima Max Pro X4
Measures VO2 max
VO2 max capacity is a measurement of the amount of oxygen your body can use during physical exercise. A high VO2 max capacity indicates good fitness levels.
- Boult Audio Crown R
- Maxima Max Pro X4
Measures resting heart rate
This measurement is your heart rate per minute when you're at rest, such as when you're relaxed, sitting, or lying down. For adults, this is typically between 60–100.
- Boult Audio Crown R
- Maxima Max Pro X4
Has fast/slow heart rate notifications
It can notify you when your resting heart rate is above or below the normal range.
- Boult Audio Crown R
- Maxima Max Pro X4
Can be used to answer calls
The device has a speaker and microphone that allow you to answer calls made to your smartphone.
- Boult Audio Crown R
- Maxima Max Pro X4
Has notifications
If you get a notification such as a call or message, the device will vibrate on your wrist or make a noise to alert you.
- Boult Audio Crown R
- Maxima Max Pro X4
Has irregular heart rate warnings
Through continuous heart rate monitoring, the device is able to detect an irregular heartbeat and alert the user.
- Boult Audio Crown R
- Maxima Max Pro X4
Has silent alarm
The device can wake you using vibration, so as not to disturb anyone else sleeping in the room.
- Boult Audio Crown R
- Maxima Max Pro X4
Has vibrating alerts
Vibrating alerts have a variety of uses, such as interval training.
- Boult Audio Crown R null
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- Maxima Max Pro X4 null
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Has fall detection
Fall detection is a feature that relies on accelerometers and other sensors to differentiate between regular movement and a fall. If the wearer falls, the device can perform functions such as sounding an alarm or displaying an alert.
- Boult Audio Crown R null
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- Maxima Max Pro X4 null
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Has a stopwatch
With a stopwatch you can time yourself.
- Boult Audio Crown R null
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- Maxima Max Pro X4 x GHz
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Has voice commands
You can use your voice to control key functions of the device and you can easily access your device without pushing any button.
- Boult Audio Crown R
- Maxima Max Pro X4
RAM
Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
- Boult Audio Crown R null
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- Maxima Max Pro X4 1 years
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Has a built-in camera remote control function
The device can control your smartphone’s camera remotely (without installing third-party apps), allowing you to take shots even if your phone isn't near you.
- Boult Audio Crown R null
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- Maxima Max Pro X4 null
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Acquires GPS faster
It can periodically download data on the future position of GPS satellites. This enables it to lock on much faster, so you don’t have to wait around to get a GPS fix.
- Boult Audio Crown R null
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- Maxima Max Pro X4 null
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Warranty period
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction. Note: This may vary by region.
- Boult Audio Crown R 1
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- Maxima Max Pro X4 null
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DirectX version
DirectX is used in video games, with newer versions supporting better graphics and features. The latest version is DirectX 12 Ultimate, which includes support for ray tracing, mesh shaders, and variable rate shading (VRS).
- Boult Audio Crown R null
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- Maxima Max Pro X4 null
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Number of microphones
More microphones result in better sound quality and enable the device to filter out background noise.
- Boult Audio Crown R 1
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- Maxima Max Pro X4 null
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App & Software
Free app
You can download the app for free, from platforms such as Google Play or the App Store.
- Boult Audio Crown R
- Maxima Max Pro X4
Has exercise diary
It has an exercise diary, allowing you to easily keep track of your previous workouts.
- Boult Audio Crown R
- Maxima Max Pro X4
Ad-free
Adverts can be distracting and obtrusive. Apps and blogs without ads are more aesthetically pleasing, nicer to use, and make the content stand out.
- Boult Audio Crown R
- Maxima Max Pro X4
Has coaching
The app can determine the best way for you to progress in your exercise, and offers coaching advice.
- Boult Audio Crown R
- Maxima Max Pro X4
Has temperature tracking
You can keep track of your temperature. Temperature data can be used to help work out the most likely time you will be ovulating.
- Boult Audio Crown R
- Maxima Max Pro X4
Has period notifications
You get a notification when you are due to get your period.
- Boult Audio Crown R
- Maxima Max Pro X4
Syncs with existing calendars
You can sync your data to standard calendar apps, such as Apple’s Calendar or Google Calendar.
- Boult Audio Crown R
- Maxima Max Pro X4
Has music playback
You can listen to your own music when working out. This can make exercising more enjoyable and motivate you to push yourself further.
- Boult Audio Crown R
- Maxima Max Pro X4
Exports to email
You can export app data to an email address, so you have a backup and can forward it to another person if needed.
- Boult Audio Crown R
- Maxima Max Pro X4
Displays fertile window notifications
The app integrates an ovulation calendar, regularly updated based on the information you add about your menstrual cycle. With the help of the ovulation calendar, the app estimates the approximate dates when you may ovulate and be fertile, and notifies you.
- Boult Audio Crown R
- Maxima Max Pro X4
Doesn’t require account
The app doesn't require you to make an account in order to log in and use the app.
- Boult Audio Crown R
- Maxima Max Pro X4
Predicts ovulation
The app uses your menstruation data to predict the date of your ovulation, which usually lasts 24-48 hours. This is useful if you are trying to conceive, as your fertility increases around ovulation.
- Boult Audio Crown R
- Maxima Max Pro X4
Predicts start date
The app uses your data to predict future period start dates.
- Boult Audio Crown R
- Maxima Max Pro X4